One of the most essential systems on the modern car is the stability control system. This is aimed to help prevent rollovers, and is tied into the traction control system. One of the most vital components of your stability system is the yaw rate sensor, which is also known as a rotational speed sensor.
Its function is quite straightforward – it measures a vehicle’s angular velocity on its vertical axis. Simply stated, it measures how far your vehicle is tilting in a turn. Information from your yaw rate sensor is provided to the car’s computer, where it is used to determine if too much yaw is present. If too much yaw is perceived, the computer can automatically apply the right braking pressure to one or more wheels, or adjusting engine performance to correct the problem. This makes sure your vehicle continues travelling in the direction you point the steering wheel.
Facts to Note:
The yaw rate sensor is generally found under the driver front seat.
A scan tool is vital to troubleshoot the yaw sensor, permitting the technician to accurately monitor its operation and check for related trouble codes.
A yaw sensor may require re-calibration if it is disconnected for any reason.
How to Fix:
The center console lower panel is detached from the center of the dash
The defective Yaw Rate Sensor is detached from the center console location
The new Yaw Rate Sensor is fitted into the center console location
The center console panel is reinstalled into the center of the dash
The Yaw Rate Sensor is tested for proper operation and the vehicle is road tested for proper operation
Your yaw rate sensor is an essential piece of safety equipment and if it is malfunctioning, your stability control system will not work correctly. While this will not render your vehicle unusable, it is vital to have the problem analyzed and fixed by one of your expert mechanics. A new yaw rate sensor will also need to be calibrated after installation.
Common symptoms indicating you may need to change the Yaw Rate Sensor:
Stability Control System light is on
Stability Control System light comes on intermittently
Importance of this service:
In order for your stability control system to work correctly, your yaw rate sensor must be in good working order. While this will not automatically present a safety issue in most cases, it is important to have the problem diagnosed quickly.